2  A A X XDX) ( 1)SIN 20ĐẶT DU DX   1 1U X TACO    SIN...

Câu 2:

²







a A

x

xdx

)

(

1)sin 2

0

Đặt





du dx



 



1

1

u x

taco







 

sin 2

s2x

dv

x

v

co





2















2

2

2

1

1

1 1 1







 







 

 

(

1)(

s2x)

s2xdx (

1)

sin 2

1

A

x

co

co

x

2

2

2

2 2 4

4

0

0







ln8

)

^x

^x

1

b B





e e



dx

ln3

1

2

1

2

x

x

x

t



e

  

t

e

 

tdt e dx





 

ln 3

2

x

t

ln 8

3

2

2

2

14

2

3

2

3

3

B





t dt



t



e

e





3

2

x

x

3

2

1

1

 









c C

dx

x

x

dx

)

(3

2

)

e







  

3

2

3

2

x

x

x

e

e

(

ln )

1

1

1

4

1

1

2













  

)

1

1

1

3

d D

dx

dx

dx







6

2

6

0

0

0